<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>arr</title>
	<script type="text/javascript">
		function max(arr){
			var i=arr[0];
			for (var a =0; a<arr.length; a++) {
				if (i<arr[a]) {
					i=arr[a];
				};
			};		
				return i;
		}
		var arr=[1,56,23,6,43,87,3,5,55];
		document.write(max(arr));
		max(arr);	 

	</script>
</head>
<body>
	
</body>
</html>